Effect of the Two Dimensional Property in NiCl_2 on the Temperature Dependence of the Antiferromagnetic Resonance Point

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概要

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• Electron spin resonances in the hexagonal layer type compound NiCl_2 in the ordered state have been studied in detail by using microwaves of 10∼70 GHz regions. Considering the resonance data together with other facts, a possible model for the spin arrangement in NiCl_2 in which spins lie in the c-planes by making adjacent ferromagnetic layers which alternate in direction along the c-axis is obtained. The temperature dependence of the resonance point (H_0//c-axis) can not be explained by the molecular field theory. A spin-wave calculation which takes into account a two-dimensional property in this salt gives the following temperature dependence of the resonance frequency, hν=√<(g//μ_BH)^2+8&amid;J'∣Z'SD(S-1/2)>-ATΣ^^∞__<n=1>(1/n)exp(-√<8∣J'∣z'SD(S-1/2)>・n/k_BT)+BT^2Σ^^∞__<=1%gt;(1/n^2)e×p(-√<8∣J'∣z'SD(S-<1/2>)・n/K_BT). A quantitative agreement between the theory and the experiment is attained.

• 社団法人日本物理学会の論文
• 1973-02-05

著者

• Katsumata Koichi

  Research Institute Of Applied Electricity Hokkaido University

• YAMASAKA Koichi

  Research Institute of Applied Electricity, Hokkaido University

• Yamasaka Koichi

  Research Institute Of Applied Electricity Hokkaido University

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• Re-Entrant Spin-Glass Behavior of the Rendomly Mixed Insulating Ferromagnet and Aniferromagnet,Rb_2Mn_Cr_xCl_4
• Experimental Observation of the Antiferro-Fan Transition in NiBr_2
• Mossbauer Study of a Random Mixture with Orthogonal Spin Anisotropies: Fe_Co_xCl_2・2H_2O
• Effect of the Two Dimensional Property in NiCl_2 on the Temperature Dependence of the Antiferromagnetic Resonance Point
• Metamagnetic Phase Transition and Anomalous Hysteresis in FeCl_2・2H_2O
• Electron Paramagnetic Resonance in CdBr_2:Ni^
• Electron Spin Resonance in NiBr_2 Near the Critical Point
• Specific Heat Measurement on a Random Mixture of Two Antiferromagnets with Competing Anisotropies

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